The escalation of the fault is absurd. As far as I can tell, it’s gone:

Stage 1 technical support
Stage 2 technical support
BT Exchange technical support
Ericcson technical support

And now the fault is being managed by some kind of crack ninja network technical support team. If anyone knows of a simpler way to resolve this, please let me know: what’s happened is that, despite the DSL being in sync at 17 meg / 1 meg, the ATM/PPPoA connection won’t resolve, so I gots me no t’internet.

I may write a song about this.